Method for preparing hexagonal molybdenum disulfide nanosheet as anti-friction additive

A technology of hexagonal molybdenum disulfide and anti-friction additives, applied in the direction of molybdenum sulfide, nanotechnology for materials and surface science, nanotechnology, etc., to achieve simple and easy-to-control production process, broad development prospects, and improve anti-friction and anti-wear capabilities Effect

Active Publication Date: 2013-05-01
苏州惠丰润滑材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation methods disclosed in the above-mentioned patents all need high temperature treatment or reaction

Method used

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  • Method for preparing hexagonal molybdenum disulfide nanosheet as anti-friction additive
  • Method for preparing hexagonal molybdenum disulfide nanosheet as anti-friction additive
  • Method for preparing hexagonal molybdenum disulfide nanosheet as anti-friction additive

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (a) Add 0.2 ml of ammonia solution (25wt%) into 16 ml of absolute ethanol and 40 ml of distilled water mixed solution, then add 0.13 g of F127, 0.4 g of resorcinol and 0.56 ml of formaldehyde solution, put the solution in Stir in a constant temperature heating magnetic stirrer in a 30°C constant temperature water bath until uniform; then, put the above mixed solution in a stainless steel reaction kettle, a hydrothermal reaction kettle, and place it in a vacuum drying oven at 180°C for 24h, then cool to room temperature. After the reaction product was separated by centrifugation, it was washed repeatedly with deionized water and absolute ethanol respectively, and finally dried at 60° C. for 10 h under vacuum conditions to obtain resorcinol-formaldehyde resin nanopolymer balls.

[0029] (b) Add 0.88g Na 2 MO 4 , 1.40g Na 2 S, 0.7g NH 2 Dissolve OH·HCl in 70 ml of distilled water, then add 0.3 g of resorcinol-formaldehyde resin nano-polymeric balls prepared before, stir...

Embodiment 2

[0033] 0.88g Na 2 MO 4 , 1.40g Na 2 S, 0.7gNH 2 OH·HCl was dissolved in 70 ml of distilled water, then 0.3 g of the carbon nanospheres prepared in (a) of Example 1 were added, and the pH value was adjusted to about 7 with 2 mol / L hydrochloric acid. After stirring for 30min, the mixture was transferred to a 100ml stainless steel reaction kettle, placed in a vacuum oven at 180°C for 24h, and cooled to room temperature. After centrifugation, the reaction product was washed repeatedly with deionized water and absolute ethanol, dried at 80°C for 10 hours under vacuum, and then annealed at 450°C for 2 hours in a tube furnace to obtain a black powder, namely hexagonal molybdenum disulfide Nanosheets.

[0034] The prepared hexagonal molybdenum disulfide nanosheets were added to the heavy-duty gear oil CKD220, and oleic acid was used as the surface dispersant of nanomaterials, and the prepared oil samples were dispersed at a constant temperature of 60°C with an ultrasonic disperser...

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Abstract

The invention discloses a method for preparing a hexagonal molybdenum disulfide nanosheet as an anti-friction additive. An additive-assistant hydrothermal synthesis method is adopted. The preparation method comprises the following steps: synthesizing a carbon ball from a high molecular compound as a carbon source by a Stober method; dissolving Na2MO4, Na2S and NH2OH.HCl in water to obtain a solution; adding the prepared nano carbon ball and uniformly dispersing the nano carbon ball in the solution by centrifugal stirring; adjusting the pH value of the solution to 6 to 8 with acid, and stirring the obtained solution and then moving the solution to a stainless steel reaction kettle for thermostatic reaction to obtain a reaction product; and separating the reaction product and annealing the product in a tube furnace of 400 to 600 DEG C to obtain the hexagonal molybdenum disulfide nanosheet. The preparation method is simple in process, and the prepared product is high in purity and yield, and excellent in antifriction and anti-wearing and lubricating property, and can serve as the anti-friction additive of lubricating oil and fat.

Description

[0001] technical field [0002] The invention relates to a method for preparing a friction-reducing additive, in particular to a method for preparing hexagonal molybdenum disulfide nanosheets used as a friction-reducing additive. [0003] Background technique [0004] Transition metal sulfoselenides have various physical properties, such as metallicity, semiconducting properties, magnetism, superconductivity, etc., and have broad application prospects. The preparation and properties of such substances have gradually become a recent research hotspot. [0005] Molybdenum disulfide (MoS 2 ) is a lubricating material with excellent performance and is widely used in industry. MoS 2 It has a layered structure similar to graphite, in which the Mo-S facets have a large specific surface area, and the layers are combined by strong covalent bonds, while the layers are combined by weak Van der Waals forces. easy to peel off. Therefore, the shear resistance between the layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B82Y30/00
Inventor 李长生唐华惠进德惠泽民刘玉花
Owner 苏州惠丰润滑材料有限公司
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